The Pastromorbo virus killed most living creatures in Equestria. What didn't die immediately was mutated almost beyond recognition. The virus twisted what could be thought of as normal.

A great many years have passed since then, and now the Pastromorbo virus has managed to create life... of a sort. An evil creature takes form in the desert, and sets it's sights on expansion

Inspired by John Carpenter's The Thing and The Things by Peter Watts.

Based on The Pastromorbo Epidemic by Aeluna

Thanks to ChudoJogurt , Goldenwing, and many others for being great editors and helping me out of a bind.